A giant refracting telescope at an observatory has an objective lens of focal length 1.0 cm is used , what is the angular magnification of the telescope ? if this telescope is used to view the moon, what is the diameter of the image of the moon formed by this objective lens? The diameter of the moon is $3.48 \times 10^6 \;m$ and radius of the lunar orbit is $3.8 \times 10^8\;m$

Question

$\begin{array}{1 1} 13.73\;mm \\ 13.73\;cm \\ 13.73\;m \\ 1.373\;cm \end{array} $